Which Statement About Cell Junctions Is True

Multiple Choice

Which statement about cell junctions is true?

A) Desmosomes and gap junctions contain keratin,whereas tight junctions contain collagen.
B) Gap junctions and tight junctions have specialized protein channels called connexins,whereas desmosomes do not.
C) Tight junctions and desmosomes have mechanical roles,whereas gap junctions facilitate communication between cells.
D) Desmosomes and gap junctions are found in epithelial tissue,whereas tight junctions are found only in nerve cells.
E) All cell junctions have different functions,though structurally they are the same.